add new features:

- turn of OLED after x sec
- activate OLED with key
- more LoRa settings

data/is-cfg.json

@@ -1,5 +1,5 @@
 {
-	"version":1,
+	"version":2,
 	"callsign":"NOCALL-10",
 	"wifi":
 	{
@@ -32,5 +32,17 @@
 		"forward_timeout":5,
 		"beacon":true,
 		"beacon_timeout":30
+	},
+	"lora":
+	{
+		"frequency_rx":433775000,
+		"frequency_tx":433775000,
+		"power":20
+	},
+	"display":
+	{
+		"always_on": true,
+		"timeout":10,
+		"overwrite_pin":0
 	}
 }

platformio.ini

@@ -12,7 +12,7 @@ lib_deps =
 	APRS-Decoder-Lib
 	APRS-IS-Lib
 	LoRa
-	LoRa-APRS-Lib
+	https://github.com/lora-aprs/LoRa-APRS-Lib@0.0.4
 	NTPClient
 	ArduinoJson
 	AXP202X_Library

src/LoRa_APRS_iGate.cpp

@@ -24,6 +24,7 @@ hw_timer_t * timer = NULL;
 volatile uint secondsSinceLastAPRSISBeacon = 0;
 volatile uint secondsSinceLastDigiBeacon = 0;
 volatile uint secondsSinceStartup = 0;
+volatile uint secondsSinceDisplay = 0;
 
 WiFiMulti WiFiMulti;
 WiFiUDP ntpUDP;
@@ -82,13 +83,34 @@ void setup()
 	if(Config.aprs_is.active) setup_aprs_is();
 	setup_timer();
 
+	if(Config.display.overwritePin != 0)
+	{
+		pinMode(Config.display.overwritePin, INPUT);
+		pinMode(Config.display.overwritePin, INPUT_PULLUP);
+	}
+
 	delay(500);
 	Serial.println("setup done...");
+	secondsSinceDisplay = 0;
 }
 
 // cppcheck-suppress unusedFunction
 void loop()
 {
+	static bool display_is_on = true;
+	if(Config.display.overwritePin != 0 && !digitalRead(Config.display.overwritePin))
+	{
+		secondsSinceDisplay = 0;
+		display_is_on = true;
+		setup_display();
+	} else
+	if(!Config.display.alwaysOn && secondsSinceDisplay > Config.display.timeout && display_is_on)
+	{
+		turn_off_display();
+		display_is_on = false;
+		Serial.println("-");
+	}
+
 	static bool beacon_aprs_is = Config.aprs_is.active && Config.aprs_is.beacon;
 	static bool beacon_digi = Config.digi.active && Config.digi.beacon;
 
@@ -110,6 +132,7 @@ void loop()
 	if(Config.wifi.active) ArduinoOTA.handle();
 	if(Config.wifi.active && WiFiMulti.run() != WL_CONNECTED)
 	{
+		setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 		Serial.println("[ERROR] WiFi not connected!");
 		show_display("ERROR", "WiFi not connected!");
 		delay(1000);
@@ -117,6 +140,7 @@ void loop()
 	}
 	if(Config.aprs_is.active && !aprs_is->connected())
 	{
+		setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 		Serial.print("[INFO] connecting to server: ");
 		Serial.print(Config.aprs_is.server);
 		Serial.print(" on port: ");
@@ -142,6 +166,7 @@ void loop()
 	{
 		std::shared_ptr<APRSMessage> msg = lora_aprs.getMessage();
 
+		setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 		show_display(Config.callsign, timeClient.getFormattedTime() + "         LoRa", "RSSI: " + String(lora_aprs.getMessageRssi()) + ", SNR: " + String(lora_aprs.getMessageSnr()), msg->toString());
 		Serial.print("[" + timeClient.getFormattedTime() + "] ");
 		Serial.print(" Received packet '");
@@ -182,6 +207,7 @@ void loop()
 
 			if(foundMsg == lastMessages.end())
 			{
+				setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 				show_display(Config.callsign, "RSSI: " + String(lora_aprs.getMessageRssi()) + ", SNR: " + String(lora_aprs.getMessageSnr()), msg->toString(), 0);
 				Serial.print("Received packet '");
 				Serial.print(msg->toString());
@@ -222,19 +248,23 @@ void loop()
 	if(beacon_digi)
 	{
 		beacon_digi = false;
+		setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 		show_display(Config.callsign, "Beacon to HF...");
 		Serial.print("[" + timeClient.getFormattedTime() + "] ");
 		Serial.print(BeaconMsg->encode());
 		lora_aprs.sendMessage(BeaconMsg);
 		Serial.println("finished TXing...");
+		show_display(Config.callsign, "Standby...");
 	}
 	if(beacon_aprs_is)
 	{
 		beacon_aprs_is = false;
+		setup_display(); secondsSinceDisplay = 0; display_is_on = true;
 		show_display(Config.callsign, "Beacon to APRS IS Server...");
 		Serial.print("[" + timeClient.getFormattedTime() + "] ");
 		Serial.print(BeaconMsg->encode());
 		aprs_is->sendMessage(BeaconMsg);
+		show_display(Config.callsign, "Standby...");
 	}
 }
 
@@ -257,6 +287,11 @@ void load_config()
 		while (true)
 		{}
 	}
+
+	if(KEY_BUILTIN != 0 && Config.display.overwritePin == 0)
+	{
+		Config.display.overwritePin = KEY_BUILTIN;
+	}
 }
 
 void setup_wifi()
@@ -323,13 +358,15 @@ void setup_ota()
 
 void setup_lora()
 {
-	lora_aprs.tx_frequency = LORA_RX_FREQUENCY;
+	lora_aprs.rx_frequency = Config.lora.frequencyRx;
+	lora_aprs.tx_frequency = Config.lora.frequencyTx;
 	if (!lora_aprs.begin())
 	{
 		Serial.println("[ERROR] Starting LoRa failed!");
 		show_display("ERROR", "Starting LoRa failed!");
 		while (1);
 	}
+	lora_aprs.setTxPower(Config.lora.power);
 	Serial.println("[INFO] LoRa init done!");
 	show_display("INFO", "LoRa init done!", 2000);
 
@@ -364,6 +401,7 @@ void IRAM_ATTR onTimer()
 	secondsSinceLastAPRSISBeacon++;
 	secondsSinceLastDigiBeacon++;
 	secondsSinceStartup++;
+	secondsSinceDisplay++;
 	portEXIT_CRITICAL_ISR(&timerMux);
 }
 

src/configuration.cpp

@@ -37,7 +37,6 @@ Configuration ConfigurationManagement::readConfiguration()
 	file.close();
 
 	Configuration conf;
-	conf.version                  = data["version"];
 	conf.callsign                 = data["callsign"].as<String>();
 	conf.wifi.active              = data["wifi"]["active"];
 	JsonArray aps = data["wifi"]["AP"].as<JsonArray>();
@@ -62,6 +61,16 @@ Configuration ConfigurationManagement::readConfiguration()
 	conf.digi.beacon              = data["digi"]["beacon"];
 	conf.digi.beaconTimeout       = data["digi"]["beacon_timeout"];
 
+	if(data["version"] >= 2)
+	{
+		conf.lora.frequencyRx     = data["lora"]["frequency_rx"];
+		conf.lora.frequencyTx     = data["lora"]["frequency_tx"];
+		conf.lora.power           = data["lora"]["power"];
+		conf.display.alwaysOn     = data["display"]["always_on"];
+		conf.display.timeout      = data["display"]["timeout"];
+		conf.display.overwritePin = data["display"]["overwrite_pin"];
+	}
+
 	return conf;
 }
 
@@ -99,6 +108,12 @@ void ConfigurationManagement::writeConfiguration(Configuration conf)
 	data["digi"]["forward_timeout"]         = conf.digi.forwardTimeout;
 	data["digi"]["beacon"]                  = conf.digi.beacon;
 	data["digi"]["beacon_timeout"]          = conf.digi.beaconTimeout;
+	data["lora"]["frequency_rx"]            = conf.lora.frequencyRx;
+	data["lora"]["frequency_tx"]            = conf.lora.frequencyTx;
+	data["lora"]["power"]                   = conf.lora.power;
+	data["display"]["always_on"]            = conf.display.alwaysOn;
+	data["display"]["timeout"]              = conf.display.timeout;
+	data["display"]["overwrite_pin"]        = conf.display.overwritePin;
 
 	serializeJson(data, file);
 	serializeJson(data, Serial);

src/configuration.h

@@ -59,7 +59,27 @@ public:
 		int beaconTimeout;
 	};
 
-	Configuration() : version(1), callsign("NOCALL-10") {};
+	class LoRa
+	{
+	public:
+		LoRa() : frequencyRx(433775000), frequencyTx(433775000), power(20) {}
+
+		long frequencyRx;
+		long frequencyTx;
+		int power;
+	};
+
+	class Display
+	{
+	public:
+		Display() : alwaysOn(true), timeout(10), overwritePin(0) {}
+
+		bool alwaysOn;
+		int timeout;
+		int overwritePin;
+	};
+
+	Configuration() : version(2), callsign("NOCALL-10") {};
 
 	int version;
 	String callsign;
@@ -67,6 +87,8 @@ public:
 	Beacon beacon;
 	APRS_IS aprs_is;
 	Digi digi;
+	LoRa lora;
+	Display display;
 };
 
 class ConfigurationManagement

src/display.cpp

@@ -21,13 +21,11 @@ void setup_display()
 		Serial.println("SSD1306 allocation failed");
 		while (1);
 	}
+}
 
-	display.clearDisplay();
+void turn_off_display()
-	display.setTextColor(WHITE);
+{
-	display.setTextSize(1);
+	display.ssd1306_command(SSD1306_DISPLAYOFF);
-	display.setCursor(0,0);
-	display.print("LORA SENDER ");
-	display.display();
 }
 
 void show_display(String header, int wait)

src/display.h

@@ -3,6 +3,7 @@
 #define DISPLAY_H_
 
 void setup_display();
+void turn_off_display();
 
 void show_display(String header, int wait = 0);
 void show_display(String header, String line1, int wait = 0);

src/pins.h

@@ -23,4 +23,19 @@
 	#define OLED_RST	25
 #endif
 
+
+
+#undef KEY_BUILTIN
+#if defined(TTGO_T_Beam_V0_7)
+	#define KEY_BUILTIN 39
+#endif
+
+#if defined(TTGO_T_Beam_V1_0)
+	#define KEY_BUILTIN 38
+#endif
+
+#ifndef KEY_BUILTIN
+	#define KEY_BUILTIN 0
+#endif
+
 #endif